Empire's preeminent grand duke, Richard, He is very influential that rumors say he even controls the emperor. Richard formed an assassin group called 'Black Scorpion' under the mission of slaying the Empire's unnecessary trash, but no knows its true identity. Dayan, the first member of the group, only follows Richard's command and never feels guilty of killing others. While she is very naive and innocent most of the times, when it comes to taking down the target, she becomes ruthless.